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Eric R. Kandel
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Journal Articles
Jin-A Lee, Sue-Hyun Lee, Changhoon Lee, Deok-Jin Chang, Yong Lee, Hyoung Kim, Ye-Hwang Cheang, Hyoung-Gon Ko, Yong-Seok Lee, Heejung Jun, Dusan Bartsch, Eric R. Kandel, Bong-Kiun Kaang
Journal:
Journal of Cell Biology
Journal of Cell Biology (2006) 174 (6): 827–838.
Published: 11 September 2006
Abstract
Long-term memory requires transcriptional regulation by a combination of positive and negative transcription factors. Aplysia activating factor (ApAF) is known to be a positive transcription factor that forms heterodimers with ApC/EBP and ApCREB2. How these heterodimers are regulated and how they participate in the consolidation of long-term facilitation (LTF) has not, however, been characterized. We found that the functional activation of ApAF required phosphorylation of ApAF by PKA on Ser-266. In addition, ApAF lowered the threshold of LTF by forming a heterodimer with ApCREB2. Moreover, once activated by PKA, the ApAF–ApC/EBP heterodimer transactivates enhancer response element–containing genes and can induce LTF in the absence of CRE- and CREB-mediated gene expression. Collectively, these results suggest that PKA-activated ApAF–ApC/EBP heterodimer is a core downstream effector of ApCREB in the consolidation of LTF.
Includes: Supplementary data